.treeNode {
  cursor: default;
}
.treeNode > label {
  margin-right: 16px;
}
.treeNode > span {
  margin-right: 8px;
  cursor: pointer;
  visibility: hidden;
}
.treeNode:hover > span {
  visibility: visible;
}
.treeNode > span:nth-child(2):hover {
  color: #1890ff;
}
.treeNode > span:nth-child(3):hover {
  color: #f5222d;
}
